(a)
Write balanced half-reactions for the process:
Oxidation: Se^2- (aq) → Se
(s) + 2e-
Reduction: 2So3^2- (aq) + 3H2O (l) + 4e- →
S2O3^2- + 6OH- (aq)
(b)
If E sulfite is 0.57 V, calculate E selenium:
E anode = E cathode – E cell
= -0.57 – 0.35
=
-.092
Answer:Explained
Explanation:
Given
mass of aluminium kettle(
)=1.05 kg
(a)Heat capacity of the kettle=Heat capacity of Aluminium
(b)Heat is required to increase the temperature of this kettle from 
Q=71.82 kJ
(c)If kettle contains water 1.25 L of water i.e. 1.246 kg of water then heat required to raise the temperature from 23 to 99
Q=71.82+396.20=468.028 kJ
Answer:
Chemical bonds are the electrical forces of attraction that hold atoms or ions together to form molecules. Different types of chemical bonds and their varying intensity are directly responsible for some of the physical properties of minerals such as hardness, melting and boiling points, solubility, and conductivity.
Explanation:
elements in the periodic table are arranged by the atomic number of the element
